[python] Fix wrong parameters in ExperimentDataPipe

[ebezzi]

Not sure how those ended up there in the first place.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.12%. Comparing base (96c0499) to head (d15c98b).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1178   +/-   ##
=======================================
  Coverage   91.12%   91.12%           
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  Files          77       77           
  Lines        5902     5902           
=======================================
  Hits         5378     5378           
  Misses        524      524           

Flag	Coverage Δ
unittests	91.12% <ø> (ø)

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[atolopko-czi]

Not sure how those ended up there in the first place.

It was lacking a proper test! 😳 Probably should add one to test the defaults since all of the existing tests explicitly set these two params.